32186 datasheet(554/1032 Pages) RENESAS

554 / 1032 page

SERIAL INTERFACE

12-6

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

12.2.1 SIO Interrupt Related Registers

The SIO interrupt related registers are used to control the interrupt request signals output from SIO to the

Interrupt Controller (ICU), as well as select the source of each interrupt request.

(1) Interrupt request status bit

This status bit is used to determine whether an interrupt is requested. When an interrupt request occurs,

this bit is set in hardware (cannot be set in software). The status bit is cleared by writing "0." Writing "1"

has no effect; the bit retains the status it had before the write. Because this bit is unaffected by the

interrupt request mask bit, it can also be used to inspect the operating status of peripheral functions.

In interrupt handling, make sure that within the grouped interrupt request status, only the status bit for the

interrupt request that has been serviced is cleared. If the status bit for any interrupt request that has not

been serviced is cleared, the pending interrupt request is cleared simultaneously with its status bit.

(2) Interrupt request mask bit

This bit is used to disable unnecessary interrupt requests within the grouped interrupt request. Set

this bit to "1" to enable interrupt requests or "0" to disable interrupt requests.

Figure 12.2.1 Interrupt Request Status and Mask Registers

To the Interrupt Controller

Interrupt request from

each peripheral function

Interrupt request status

Data bus

Set

• Group interrupt

Interrupt request mask

clear

F/F

Data=0

Serial Interface Related Register Map (2/2)

Address

+0 address

+1 address

See

b7 b8

b15

pages

H'0080 0A18

SIO4 Special Mode Register

(Use inhibited area)

12-27

(S4SMOD)

(Use inhibited area)

H'0080 0A20

SIO5 Transmit Control Register

SIO5 Transmit/Receive Mode Register

12-14

(S5TCNT)

(S5MOD)

12-15

H'0080 0A22

SIO5 Transmit Buffer Register

12-19

(S5TXB)

H'0080 0A24

SIO5 Receive Buffer Register

12-20

(S5RXB)

H'0080 0A26

SIO5 Receive Control Register

SIO5 Baud Rate Register

12-21

(S5RCNT)

(S5BAUR)

12-24

H'0080 0A28

SIO5 Special Mode Register

(Use inhibited area)

12-27

(S5SMOD)

12.2 Serial Interface Related Registers

32186 Datasheet(PDF) 554 Page - Renesas Technology Corp

32186 Datasheet(HTML) 554 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL